Based on data provided by Eau de Paris this study analyses the daily consumption of drinking water between 2017 and 2024 according to the type of usage. It highlights the major role played by the residential sector, which accounts for almost three-quarters of the total volume consumed, as well as the contrasting trends in different areas and types of activity. It also quantifies the causes for the reductions observed in the residential sector such as demographic shifts, a trend towards water conservation and "less time spent at home" due to new lifestyles enabled by remote work and the rise in furnished tourist accommodation.
Over and above the diagnosis, 145 Litres per day per capita consumed in Paris in 2024, and the factors instigating these changes, Apur proposes three scenarios for development up to 2030. All of them point towards a continued reduction in consumption, with different approaches depending on the selected hypotheses. This development is based on structural moderation of usage, linked to improved infrastructures, the spread of more energy efficient ways of functioning and awareness-raising policies. In addition to these underlying trends, are varied hypotheses according to the scenario addressing demographic developments, the transformation of residential and services usage and the tourism dynamic.